Shell script to extract a table from a plain text dump
If you have huge plain text dumps, and just want to restore one table
it's usually painful. Attached is a small shell script that can take a
plain text dump and extract a single table's COPY data commands from it.
If people think it's interesting and should be developed, I can pop it
on pgfoundry or something.
Chris
Attachments:
On Fri, Oct 07, 2005 at 04:46:12PM +0800, Christopher Kings-Lynne wrote:
If you have huge plain text dumps, and just want to restore one table
it's usually painful. Attached is a small shell script that can take a
plain text dump and extract a single table's COPY data commands from it.If people think it's interesting and should be developed, I can pop it
on pgfoundry or something.
Hmm, what I usually use is:
bzcat $file | sed -ne "/^COPY \"$table\" /,/^\\\.\$/p"
However, error checking and wrapping it into a script is a good idea.
If it got given a couple of switches to control the output, maybe we
can have a pg_restore for text dumps :)
Have a nice day,
--
Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/
Show quoted text
Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
tool for doing 5% of the work and then sitting around waiting for someone
else to do the other 95% so you can sue them.
On Fri, Oct 07, 2005 at 11:36:27AM +0200, Martijn van Oosterhout wrote:
On Fri, Oct 07, 2005 at 04:46:12PM +0800, Christopher Kings-Lynne wrote:
If you have huge plain text dumps, and just want to restore one table
it's usually painful. Attached is a small shell script that can take a
plain text dump and extract a single table's COPY data commands from it.If people think it's interesting and should be developed, I can pop it
on pgfoundry or something.Hmm, what I usually use is:
bzcat $file | sed -ne "/^COPY \"$table\" /,/^\\\.\$/p"
However, error checking and wrapping it into a script is a good idea.
If it got given a couple of switches to control the output, maybe we
can have a pg_restore for text dumps :)
If only the text dump could have a TOC, by means of which it would be
possible to seek to the exact position of the dump that has a table's
dump, it would certainly be useful. Otherwise, you need to read the
whole file anyway, which is bad. Of course, if it's compressed then
there's not much you can do.
--
Alvaro Herrera http://www.amazon.com/gp/registry/CTMLCN8V17R4
"Los dioses no protegen a los insensatos. �stos reciben protecci�n de
otros insensatos mejor dotados" (Luis Wu, Mundo Anillo)
Argh! That's some sed coolness :)
Chris
Martijn van Oosterhout wrote:
Show quoted text
On Fri, Oct 07, 2005 at 04:46:12PM +0800, Christopher Kings-Lynne wrote:
If you have huge plain text dumps, and just want to restore one table
it's usually painful. Attached is a small shell script that can take a
plain text dump and extract a single table's COPY data commands from it.If people think it's interesting and should be developed, I can pop it
on pgfoundry or something.Hmm, what I usually use is:
bzcat $file | sed -ne "/^COPY \"$table\" /,/^\\\.\$/p"
However, error checking and wrapping it into a script is a good idea.
If it got given a couple of switches to control the output, maybe we
can have a pg_restore for text dumps :)Have a nice day,